package com.lyt.reggie.controller;

import com.lyt.reggie.common.R;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.UUID;

/**
 * Author:李雨涛
 * Date:2023-03-03-12:28
 * 描述：
 */
@RestController
@RequestMapping("/common")

public class CommonController {
    @Value("${reggie.path}")
    private String basePath;

    @PostMapping("/upload")
   public R<String> upload(MultipartFile file){

       String originalFilename= file.getOriginalFilename();
        String suffix= originalFilename.substring(originalFilename.lastIndexOf("."));
        String fileName= UUID.randomUUID().toString()+suffix;
        File dir=new File(basePath);
        if(!dir.exists()){
            dir.mkdirs();
        }

        try {
            file.transferTo(new File(basePath+fileName));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

        return R.success(fileName);
   }
   @GetMapping("/download")
   public void download(String name, HttpServletResponse response){
       try {
           FileInputStream fileInputStream=new FileInputStream(new File(basePath+name));
           ServletOutputStream outputStream=response.getOutputStream();
           response.setContentType("image/jpeg");
           int len=0;
           byte[] bytes=new byte[1024];
           while ((len=fileInputStream.read(bytes))!=-1){
               outputStream.write(bytes,0,len);
               outputStream.flush();
           }
           outputStream.close();
           fileInputStream.close();
       } catch (Exception e) {
           throw new RuntimeException(e);
       }

   }
}
